Check that your brake fluid reservoir is full of fluid! My clutch was leaking and while the reservoir is designed to not allow the clutch to draw below the line necessary for the proper operation of the brake, the brake light was still on intermittently. It is a float sensor that checks the fluid, make sure it is not stuck. WillieP is also right in checking the sensor for the parking brake, it is simple wire that when grounded will turn the light on.

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Repairability

Stay in the loop

It's time to speak out for your right to repair

We have a chance to guarantee our right to repair electronic
equipment—like smartphones, computers, and even farm equipment. This is a once-in-a-generation
chance to protect local repair jobs—the corner mom-and-pop repair shops that
keep getting squeezed out by manufacturers.

Join the cause and tell your state representative to support Right to Repair. Tell them you believe repair should be fair, affordable, and accessible. Stand up for your right to repair!